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TCASII RA. Flight crew followed climb command, but ATC and flight crew determined the target was false. The aircraft TCASII had been written up before.
| Attributes | |
| ACN | 333950 |
| Time | |
| Date | 199604 |
| Day | Mon |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : fak |
| State Reference | VA |
| Altitude | msl bound lower : 29000 msl bound upper : 29500 |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zdc |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | cruise other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial pilot : atp |
| Experience | flight time last 90 days : 150 flight time total : 4000 flight time type : 120 |
| ASRS Report | 333950 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : flight engineer pilot : cfi pilot : atp pilot : commercial pilot : instrument |
| Experience | flight time last 90 days : 240 flight time total : 12000 flight time type : 1200 |
| ASRS Report | 334118 |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other flight crewa |
| Resolutory Action | flight crew : returned to intended course or assigned course |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
| Air Traffic Incident | other |
Narrative:
During cruise at FL290, got a TCASII TA -- target approximately 5 NM at 12 O'clock. Within seconds received a TCASII RA command 'climb, climb' soon followed by 'increase climb' command. TCASII target displayed 12 O'clock within 1 NM. I followed TCASII climb command and climbed to FL295. Advised ARTCC then descended back to FL290 when clear of 'conflict.' TCASII had been a previous write-up on apr/xx/96 on that aircraft and the TCASII transceiver had been replaced on that day. During our episode, ZDC confirmed there was no conflicting traffic with us.
Original NASA ASRS Text
Title: TCASII RA. FLC FOLLOWED CLB COMMAND, BUT ATC AND FLC DETERMINED THE TARGET WAS FALSE. THE ACFT TCASII HAD BEEN WRITTEN UP BEFORE.
Narrative: DURING CRUISE AT FL290, GOT A TCASII TA -- TARGET APPROX 5 NM AT 12 O'CLOCK. WITHIN SECONDS RECEIVED A TCASII RA COMMAND 'CLB, CLB' SOON FOLLOWED BY 'INCREASE CLB' COMMAND. TCASII TARGET DISPLAYED 12 O'CLOCK WITHIN 1 NM. I FOLLOWED TCASII CLB COMMAND AND CLBED TO FL295. ADVISED ARTCC THEN DSNDED BACK TO FL290 WHEN CLR OF 'CONFLICT.' TCASII HAD BEEN A PREVIOUS WRITE-UP ON APR/XX/96 ON THAT ACFT AND THE TCASII TRANSCEIVER HAD BEEN REPLACED ON THAT DAY. DURING OUR EPISODE, ZDC CONFIRMED THERE WAS NO CONFLICTING TFC WITH US.
Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.